Apparatus for heating and tempering grain



1. H. MAYHEw.

APPARATUS FOR HEATING AND TEMPERING GRAIN. APPLICATION FILED AUG-.2h 1916. 1,361,475.`

Patellted Dec. 7, 1920.l

narrar/Yay: f"

resident of Minneapolis,

tion, the section being JOSEPH HOWARD M ,AYI-IEW, OF MINNEAPOLIS, MINNESOTA.

, APPARATUS non. HEATING AND TEMPERING GRAIN.

naciera.

concern.'

Josnrrr HOWARD United States, and inthe county of Hennepin and State of Minnesota, have invented. certain Improvements in Apparatus for lfieating and Tempering Grain, .of which the following is a specification.

This invention relates to improvements in apparatus for heating and tempering grain and particularly to improvements in the machine described and claimed in LetA ters Patent of the United States No. 1,181,- li, issued May 2nd, 1916, to Clarence W. Carter, of lt'iinneapolis, Minnesota.

rI'lie object of the invention isto provide means for controlling the passage of the steam to and from the heating pipes or tubes and thereby increasing or decreasing the number of such pipes that -will be V.in use during the operation of the machine.

rIhe invention consists generally in the constructions and combinationshereinafter described and particularly pointed yout in the claims.V

In the accompanying drawingsforming pai-t of this specification, i

Figure 1 is a side elevation of ai machine embodying mylinvention, a portion of the structure being broken away on the line Li-l of FigQ to show the construction of the header.

Fig. 2 is a vertical section on line 2-2 of Fig. i looking in the direction of the arrow a.

Fig. 3

To alla; hom t may Be itV known that i, MArrinw, a citizen of the is a partial elevation-,of the sectalren on line 3-3 ofh'ig. 2, the direction of the arrow-Z1.

In the drawings, 2 represents the frame of the machine, 3 the rotatable cylinder, 4 the outer pipes andv 5 the inner pipes arranged within said cylinder. All of these parts may be constructed and arranged substantially as shown in the Carter patent hereinbefore referred to. As in the machine made under that patent, the heads of the cylinder are stationary as are also the groupof steam pipes, and only the cylinder or incasing shell rotates. The casing or shell rolls upon the rotatable rolls or supports 22, and it is rotated by suitable means, for instance by a toothed wheel on a driven shaft working in a toothed rack encircling and secured to the outside of the cylinder which details are not shown as they are old looking in A Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed August 21, 1916i Serial No. 116,093.

in the Carter machine and not claimed herein. The longest pipe 23 of the group of pipes shown stationary plate 2a andpasses throug an inner plate 25 ywhich is sustained from the long pipe, and in turn supports-the-.shorter pipes passing therethrough and also through a second inner plate QGthrough which the shortest pipes pass and by which they are supported, substantially as in the Carter machine referred to, and which. features are not claimed herein. As statedbefore all of'these pipes are stationary andthe outside shell or casing encircles the entire group or bank and is rotatable around them. Any suitable means, preferably that set forth in' the said Carter Patent No. 1,181,434, may be employed for rotating thev cylin c er 3.

At the end of the machine to whichthe steam is conducted, I arrange a stationary', hollow header G. -This"lieader is provided with an inner wall 7 in which the ends of the pipes 4l are seated, an outer `,vertical the ends of the inner or smaller, pipes 5 are seated. Upon the K. outer wall 8 of `said header I provide a vertical chamber 102120" which the main steam supply pipe 1111s connected, and I provide a plurality of is supported at one end bv the ably extending horizontally between the walls '8 and 9, and thereby dividing the space between said walls into a plurality of separate compartments orychambers. I `have here shown two of these partitions, one arranged a little below the center Vof the header, and the other a short distanceabove the center of said header.` The arrange ment of these partitions is shown clearly in l Fig. 2 of the drawings.

I have shown the inlet end ofthe cylinder 4broken away at the right hand portion 4 of Fig. 1 of the drawings, andfhave indicated a suitable inlet spout throughwhich grain may be fed to the interior ofthe machine. Y

At the head of the machine or the end opposite that at which the steam is admitted, I provide an inclined spout (not lettered) as shown at the right hand of Fig. 1 through which the grain to be treated is fed to the interior of the revolving cylinder.

a n u wall 8, and an intermediate wall 9'1n which l shown in outline by the dotted lines in Fig.

tween the walls from the compartment 2 and in sectionin Fig. 3, and I connect this ,chamber with the compartments be- 8 and 9 by suitable pipes also provide this chamber with a suitable drainage pipeor duct 17, located near the bottom thereof.

also provideV within the chamber 10 suitable valves 18 provided with operating hand wheels 19 by means of which the openings or ducts 16. I

V12 between the chamber 10'and the compartment between the walls 8 and 9 of the header may be closed or opened.

I also prefer to arrange within the chamber 15" suitable valves 2O having hand wheels 21 by which the openings extending between the walls 7Vand 9 and the chamber 15 may be closed or opened.

, pemtz'on.

With the valves 18 and 20 all open steam admitted through the pipe 11 to the chamber 10 reaches all of the compartments between the walls 8 and 9, and 'enters all of the inner pipes 5, and traversing said pipes returns to the compartment between the walls 7 `and 9, t rough the larger' pipes 4, and the water of condensation passes from these compartments into the chamber 15 and iows out of the waste pipe 17. By closing the upper valve 18 the steam willbe shut off from the upper compartment in the header and likewise from the upper tubes of the battery. By closing the other valve'18 the steam is shut off from the intermediate or second compartment of the header.

It is also desirable to close the opening leadin yfrom the compartments between the walls and 9 and the chamber 15, as otherwise steam that has passed through the pipes would back up and find its way into ese compartments. By means of the valves 2O the openings from the inner compartment of the header to the chamber 15 maybe closed.

as described.

said partition.

The details ofthe construction may obviously be varied in many particulars without departing from my invention.

claim as my invention: Y 1. The combination, in a grain heater, With a rotating cylinder and a battery of radiation pipes arranged therein, of' a' header arranged at the end of said cylinder, and provided with two vseries of compartments, means supporting said'pipes in 'communication with said compartments and means :for independently controlling the passage of steam to and from said compartments, substantially as described;

2. The combination, in a grain heater, with a rotating cylinder and a battery of radiation pipes arranged therein, of a header provided withV two series of compartments, with all of the compartments of one series, means controlling the passage of steam Vfrom said chamber to said compartments, and means supporting said pipes in communication with said compartments, substantially 3. The combination, in a grain heater,

with a rotating cylinder and a battery of a steam chamber communicating radiation pipes arranged therein, said pipes l being provided with two series, one inside of the other, of a headerfprovided with a series of compartments in communication with the inner series of pipes, and another series of compartments in" communication with the other series of pipes, and means controllingthe passage of steamV to and from said compartment, substantially as described; V 4. The combination, with a rotating cylinder and a battery of radiation pipes arranged therein, lsaid pipes being provided vin two'series, one inside ofV the other, means supplying steam to one series of pipes and means permittingy theV escape of steam and any water 'of condensation from the other series of pipes, and means for cutting off steam to any desired number of substantially as described.

In witness whereof, I have hereunto set my hand this 16th day of August, 1916.

'JOSEPH HOWARD ,MAYHEW said pipes,

in a grain heater,

at will passage of 

